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Publication numberUS3044081 A
Publication typeGrant
Publication dateJul 17, 1962
Filing dateOct 26, 1959
Priority dateOct 26, 1959
Publication numberUS 3044081 A, US 3044081A, US-A-3044081, US3044081 A, US3044081A
InventorsRobinson Jr Jewell
Original AssigneeRobinson Jr Jewell
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pliers
US 3044081 A
Images(1)
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Description  (OCR text may contain errors)

United States Patent Office 3,044,081 Patented July 17,1962

3,044,081 PLIERS Jewell Robinson, In, 523 Division St., Alton, Ill. Filed Oct. 25, 1959, Ser. No. 848,700 .7 1 Claim. (Cl. 7-5.5

This invention relates to pliers and in particular to electricians pliers.

Standard electricians pliers of the wire cutting type, while they form a part of every electricians kit, have limited utility. They cannot be used elfectively for wire stripping, nor are they well adapted to pig-tailing. Accordingly, electricians need either to carry separate wire turning pliers and strippers or they must do a make-shift job.

One of the objects of this invention is to provide electricians pliers which combine the functions of standard blunt nosed, heavy jawed wire cutting pliers, round nose pliers, and wire strippers.

Another object is to provide such pliers which are easy to use, and dependable.

Other objects will become apparent to those skilled in the art in the light of the following description and accompanying drawing.

In accordance with this invention, generally stated, heavy, blunt nose, wire cutting pliers are provided with wire turners mounted in the jaws in such a way that they can he slid to extended and retracted position. Guide means, connected to the wire turnersand projecting from the jaws, permit easy manipulation of the wire turners, and may function to prevent rotation of the wire turners. The wire turners are provided with fiat meeting faces, in which wire stripping notches are formed, the flattened facing surfaces engaging one another When the wire turners are in extended position with the jaws closed. The guide means projectfrom the jaws, and when in the preferred arrangement, they project in a direction parallel with the hinge axis of the pliers, they are positioned on the side of the jaws opposite the side on which the cutters are located. Detent means are cooperably positioned on the jaws and guide means, to hold the guide means, hence the wire turners, in extended and retracted positions.

In the drawing,

FIGURE 1 is a fragmentary top plan view of one illustrative embodiment of electricians pliers of this invention, showing wire turners in extended position;

FIGURE 2 is a fragmentary view in side elevation of the pliers shown in FIGURE 1;

FIGURE 3 is a fragmentary top plan view of the pliers shown in FIGURES l and 2, showing the wire turners in retracted position;

FIGURE 4 is an enlarged sectional view taken along the line 4--4 of FIGURE 3;

FIGURE 5 is an enlarged sectional view taken along the line 5-5 of FIGURE 2; and

FIGURE 6 is an enlarged view in perspective of one embodiment of guide means of this invention.

Referring now to the drawing for one illustrative embodiment of this invention, reference numeral 1 indicates a pair of pliers of the heavy, blunt nose, wire-cutting yp The pliers'l have the usual handles 2, each of which has a jaw 3 formed integrally with the handle.- The jaws 3 have fiat bearing faces 4, at right angles to which a pintle 5 extends, hingedly to connect the jaws. The jaws 3 also have serrated working faces 6, and are cut away between the working faces 6 and the bearing surfaces 4, to form cutters 7. The cutters 7 lie parallel with the bearing faces 4, along a lower side 8 of the plier, as shown in FIG- URES 1-3.

Each of the jaws 3 is provided with a passage 10, opening through the free end of the jaw. In the embodiment shown, the long axes of the passages 10 lie in the plane of the bearing surfaces 4, but are directed convergently, out wardly, with respect to one another. A slot 12 extends through an upper surface 14 of each jaw, parallel with the axis of the passage 10, communicating with the passage 10, and terminating short of the ends of passage 10.

A wire turner 16 is slidably mounted in each passage 10. In the embodiment shown, each of the passages 10 is circular in cross-section, and the wire turners are correspondingly cylindrical at their inner ends. At their outer ends, the wire turners are chamfered to provide fiat meetembodiment consists of a slide button 21, spanning and tracted position. The Wire turners may even be pushed extending beyond the margins of the slot 12, a guide rib 22, integral with the underside of the button 21, and

seated slidably within the slot 12, and a pin 23, shown in this embodiment as integral with the guide rib 22, and securely connected to the wire turner 16 by a driving fit in a radially extending hole 25 in the Wire turner 16.

Keyhole channels 26, formed on the underside of the button 21, are oriented with their narrow channels opening through opposite ends of the button 21, as shown in FIGURES 4-6. The keyhole channels 26 form a part of detent means, the complementary part of which consists of spring loaded ball type detents 27, seated in the jaws 3 immediately beyond the ends of the slots 12. As shown in FIGURES 2 and 4, the detents serve releasabiy to maintain the guide means 20, hence the wire turners 16, in either fully retracted or fully extended position.

It can be seen that the guide means ,20 project from the side 14 of the pliers, opposite the side 8 on which the cutters 7 are located. In this way, the guide means do not interfere with the use of the cutters when close cutting is required.

The wire turners are readily slid to extended or reinto their retracted position against some solid object, without manipulation of the slide button 21. When the wire turners 16 are retracted, the pliers can be used for cutting and for rough and heavy work. When the wire turners are extended, they may be used for pigtail-ing, or, byvirtue of the notches 1'8 and 19, for wire stripping. The notches may be made of any desired size, but are preferably made to accommodate numbers 12 and 14 wire, since these are the most common sizes of wire used by electricians.

Numerous variations in the construction of the pliers of this invention, the scope of the appended claim, will occur to those skilled in the art in the light of the foregoing disclosure. For example, the wire turners can be made to retract entirely within passages 10, by properly proportioning the lengths of the wire turners and passages. The guide means can be varied, as, for example, by providingspn'ng clips on the slide button, and fixed bearing stops on the jaws. This later construc tion, while cheaper than the preferred construction, is more iiable to be damaged than is the guide means of the preferred embodiment.

Thus it can be seen that pliers are provided which combine the functions of standard blunt nosed, heavy jawed wire cutting pliers, round nose pliers and wire strippers,

in one convenient, rugged, and economical tool.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent is:

In .wire cutting electriciari s pliers having heavy, bluntnosed jaws, the improvement comprising wire turners slidaibly, extensibly, and retraetably mounted in said jaws, and guide' means'connected to said wire turners and projecting from-said jaws for manipulation of said wire ,turns to extended and retracted positions, and detent means 'cooperably positioned on said jaws and said guide jaw through a slot, each'of the guide means comprising 15 a slide button spanning and extending beyond the margins of said slot, a guide rib on the underside of said slide button and seated slidably Within the slot, and a pin connected to the guide rib and to the wire turner, and each of the detent means comprising keyhole channels on the undersurface of said slide button and spring loaded bal-l type detents, aligned to said keyhole channels, mounted in said jaw at both ends of said slot.

References Cited in thefile of this patent UNITED STATES PATENTS Hughes Nov. 7, 1922 Shekerjian Dec. 27, 1932 Gary a Dec. 30, 1941

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1434388 *Nov 8, 1920Nov 7, 1922Hughes Joseph OKnife
US1892082 *Aug 17, 1931Dec 27, 1932Shekerjian Newton JPliers
US2268282 *Mar 26, 1940Dec 30, 1941Gary Alvin CPliers
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3172133 *May 14, 1962Mar 9, 1965Rizzo Olympio CLong nose pliers with cutting attachment
US3901293 *Apr 11, 1973Aug 26, 1975Cottone Joseph JGuitar stringing tools
US4023450 *Feb 19, 1976May 17, 1977Goran YgforsPliers of plastic
US4238862 *Jul 13, 1978Dec 16, 1980Leatherman Timothy SPocket multiple tool
US5542167 *Feb 21, 1995Aug 6, 1996Iwata Denko Co., Ltd.Device for attaching/detaching shaft snap ring and hole snap ring
US5697114 *Feb 29, 1996Dec 16, 1997Bear Mgc Cutlery Co., Inc.Folding multi-tool
US5916277 *Jul 8, 1997Jun 29, 1999Fiskars Inc.Multi-function tool with removable head
US5963999 *Jun 18, 1998Oct 12, 1999Imperial Schrade Corp.Multi-purpose folding tool
US5964131 *Jan 26, 1998Oct 12, 1999Valle De Oro Bank, N.A.Hand tool with sculpted handles and integral key ring
US5996451 *Jan 17, 1997Dec 7, 1999Valley De Oro Bank, N.A.Hand tool with sculpted handles and integral key ring
US6006385 *Jan 24, 1997Dec 28, 1999Kai U.S.A. Ltd.Multi-tool
US6047426 *Jan 16, 1997Apr 11, 2000Bear Mgc Cutlery Co., Inc.Folding multi-tool with adjustable pliers
US6088860 *Dec 20, 1996Jul 18, 2000Fiskars Inc.Pocket tool with removable jaws
US6170104Apr 14, 1998Jan 9, 2001Buck Knives, Inc.Hand tool with multiple locking blades controlled by a single locking mechanism and release
US6233769Sep 12, 2000May 22, 2001Buck Knives, Inc.Hand tool with multiple locking blades controlled by a single locking mechanism and release
US6305041Mar 3, 2000Oct 23, 2001Alterra Holdings CorporationPocket tool with removable jaws
US6357068Jan 11, 1996Mar 19, 2002Buck Knives, Inc.Combination tool with oppositely deploying handles
US6412130Mar 16, 1999Jul 2, 2002Kai U.S.A. Ltd.Multi-tool
US6430768May 16, 2001Aug 13, 2002Leatherman Tool Group, Inc.Folding multi-tool with adjustable pliers
US6487740May 1, 2001Dec 3, 2002Buck Knives, Inc.Hand tool with multiple locking blades controlled by a single locking mechanism and release
US6487941Oct 1, 2001Dec 3, 2002Great Neck Saw Manufacturers, Inc.Hand tool
US6578221Mar 28, 2001Jun 17, 2003Great Neck Saw Manufacturers, Inc.Foldable multi-tool
US6694558Feb 5, 2003Feb 24, 2004Great Neck Saw Manufacturers, Inc.Foldable hand tool
US6718585Aug 13, 2002Apr 13, 2004Leatherman Tool Group, Inc.Folding multi-tool with adjustable pliers
US6802094Dec 3, 2002Oct 12, 2004Leatherman Tool Group, Inc.Hand tool with multiple locking blades controlled by a single locking mechanism and release
US6983505Mar 26, 2004Jan 10, 2006Leatherman Tool Group, Inc.Folding multi-tool with adjustable pliers
US7080423Jul 16, 2004Jul 25, 2006Leatherman Tool Group, Inc.Hand tool with multiple locking blades controlled by a single locking mechanism and release
US7931668Apr 26, 2007Apr 26, 2011Sloat Glenn BMedical tool with retractible heads
US8667874Jan 12, 2011Mar 11, 2014Milwaukee Electric Tool CorporationPliers having wire strippers
US8713805Jul 27, 2011May 6, 2014Milwaukee Electric Tool CorporationHand cutting tool
Classifications
U.S. Classification7/107, 81/421, 7/133
International ClassificationH05K13/00
Cooperative ClassificationH05K13/0007
European ClassificationH05K13/00B